Any other method (wifi or with usb cable) to do live view on PC ?I can shoot tethered with Lightroom, but I need live view ( I have to teach in a traning course of basic Photograhy and it was very confortable to explain aperture/shutter, etc.)

Re: EOS utility 3 does not find my 5D IV

Once that screen is open, I would assume that the camera is connected via USB, and is switched ON. Good. You probably just need to coerce the computer into downloading a USB driver for the camera.

Close that application, and try to manually start the EOS 3 Utility. Make sure that you have an available Internet connection because the computer will probably need to download a driver for the camera. I have no idea where the drivers come from, but the PC should tell you that it has “installed” a new device, and name your camera model.

Once it installs the USB driver, the EOS Launcher should automatically launch the EOS 3 Utility in USB mode, not wireless mode, as shown in your screenshot. It would seem that the camera connected via USB cannot be detected until a USB driver to talk to the camera has been installed.

[EDIT]. Make sure the camera is the correct communication mode, USB or Wi-Fi, for the type of connection you are attempting.

Re: EOS utility 3 does not find my 5D IV

it doesn't work... If I attach the camera via USB I can see it from Explorer, meaning the usb driver is correctly loaded.

But if I launch EOS Utility it comes the wifi/lan waiting windows.

BTW even if the launcher is set in "auto-start" (see below) nothing happens when I connect the usb cable

If you are getting that Wi-Fi screen, then you are starting the wrong application. That dialog window is the EOS launcher, which automatically selects which EOS Utility to start up. You need to launch the EOS Utility 3 directly. I am using a smart device, so I cannot look up the name of the EXE file right now.

[EDIT]. Once the EOS Utility 3 runs the first time, it should automatically start itself in the future. That screen shot you have that says “Start EOS Utility ...” is coming from the EOS Launcher, not the actual EOS Utility.

Click on “Manuals”. The Wi-Fi Instruction manual is the last one listed. That might help you out. Be aware that having Wi-F- does not mean “networkable.” All it means is that the camera can communicate wirelessly in different ways, but all methods willl have limited bandwidth.